
#include <cassert>
#include <iostream>
#include <vector>
using namespace std;

void print(int a[3]) { cout << a[0] << " " << a[1] << " " << a[2] << endl; }

int main() {
  vector<int> b{1, 2, 3, 4, 5, 6, 7};
  print(b.data());
  int a = -10;
  a <<= 1;
  cout << a << endl;
  return 0;
}